Pin-joint.



J.A.DORAN.

PIN JOINT. APPLIGATION FILED MAR 25, 1913.

1,086,657. Patented Feb. 10, 1914.

WITNESSES A llorne TiaTiEh PATENT @FFTQQ.

JAMES A. IDORAN, 0F PROVIDENCE, RI-IODE ISLAND.

PEN-JOINT.

T0 (ZZZ whom it may concern Be it known that 1, JAMES A. Down, a citizen of the United States, residing at Providence, in the county of Providence and State of Rhode Island, have invented a certain new and useful Improvement in Pin- Joints, of which the following is a full, clear, and exact description.

This invention is designed to provide a pin joint for various articles, such as brooches, which use a pin or pin-tongue as the medium for attaching the article to a garment or other article.

The object of the invention is to avoid the expense, spoiled work and imperfect results incident to the use of separate wire rivets heretofore most commonly employed.

The invention consists of a pin-joint in which the combined pin-pivot and jointrivet is made integral with the body of the joint, by drawing the same up from the metal of the body, and so arranging it that it may be easily and accurately entered into and passed through a hole in the opposite side of the body and be headed up or clenched so as to securely unite the parts.

In the accompanying drawings illustrating the invention, in the several figures of which like parts are similarly designated, Figure 1 is an end elevation, and Fig. 2 is a vertical section of one form, showing the pivot-rivet projected on an arc of a circle. Fig. 8 is an end elevation, and Fig. 4: is a vertical section of another form, showing the pivot-rivet projected at a downward incline. Fig. 5 is a side view, and Fig. 6 is a vertical section showing the fastening pin in position as in the finished article.

All of the views are greatly enlarged and indeed exaggerated, for the sake of clearness.

The body 1 may be of sheet brass or other metal or alloy, and of dimensions suitable to the article on which the joint is to be used, and it comprises a base 2 by which it may be soldered or otherwise applied to the article, and the two ears 3 and 4. The ear 3 has integral with it the pivot-rivet 5 formed thereon by a succession of drawing operations, and preferably arranged at an incline to the ear, either on an arc of a circle, as in Figs. 1 and 2, or on a straight line inclined toward the base, as shown in Figs. 8 and 4. The projection of the pivot-rivet from the ear at other than a perpendicular, facilitates the engagement of the pivot-rivet with the eye Specification of Letters Patent.

Application filed March 25, 1913.

Patented Feb. it 1914i.

Serial No. 756,781.

or hole 6 in the opposite car. This pivotrivet is of sufficient length to extend clear through the hole 6 sufficiently to afford enough material to permit the riveting or clenching of the pivot-rivet on the outside of the perforated ear, as shown at 7 in Fig. 6, in order to secure the fastening pin 8 in place in the oint and also to secure the pin and ears together. Because the part 5 serves as a bearing on which the fastening pin 8 is supported and turns, it is in effect a pivot, and because it unites the two ears and the pin it is in effect a rivet, and hence it is herein referred to in its dual function as a pivot-rivet. These joints are formed from flat strips of metal, by suitable drawing presses, and then cut or stamped out, and then each unit is bent up as shown in full lines in Figs. 1 to 4, to receive the fastening pin or pin-tongue 8, as it is designated in the trade, and after the pin 8 is placed on the part 5, the ears are closed about it as shown in dotted lines Figs. 1 to 4, and in full lines Figs. 5 and 6, and the part 5 headed up or riveted as previously described.

It will be observed that the pivot-rivet is out of perpendicular with relation to the ear from which it is drawn up, and this for the purpose of more perfectly alining its leading end with the hole 6 in the opposite ear and thereby facilitating its engaging such perforated ear. In one case, Figs. 1 and 2, this arrangement out of perpendicular is effected by the arcuate form of the pivotrivet, and in the other case, Figs. 3 and 4 it is effected by the inclination of the pivot-rivet base-ward. Inasmuch as these joints are very small this deviation from the perpendicular need be slight.

The part 8 may be made of wire, having a flattened head or eye 9 to fit in a pivotal manner between the ears of the joint, and provided with cam-like projections 10 and 11 to come into contact with the base 2 so as to arrest the movement of the pin 7. The projection 10 makes it necessary to spring the pin into engagement with its guard or catch, while the projection 11 prevents the pin from falling over backward.

in all instances of my invention, the pivotrivet is integral and hollow, and drawn up from one side, and thus made very stiff, thus not only increasing its durability, but facilitating its manufacture, and particularly avoiding the handling of a separate device and its loss or displacement by use.

The pin-joint is supplied to the manufacturers of jewelry and other articles with the drawn-up pivot-rivet formed on it and as a part of it and in position to receive the pin tongue, thereafter to be headed up to complete the pin joint. In these particulars it differs from pin-joints where the pivot is a separate piece, to be inserted in holes in the ears and then riveted at both ends; and it also differs from those pin-joints where a separate shouldered rivet is inserted in a hole in one of the ears and riveted in place on the ear to which it isattached, the shoulders abutting against the inside of the ears, and then headed up or riveted in a hole in the opposite ear after the pintongue has been applied; and it differs from this last mentioned pin-joint in that the pivot or rivet in the latter is an attached element and liable to displacement and loss in use equally with the old separate rivet referred to. lvforeover, the double sliouldering and double heading up of such rivets involves an in crease of cost that is avoided by the present invention. I urthermore, it has been proposed to manufacture pin-joints with an attached pivot and a stop by swaging, but the pivot in such case does not serve to rivet or otherwise unite the opposite ears, and consequently the ears are left unsupported in use and are liable to be separated laterally by the strains on the pirrtongue in use, so that the pin is likely to escape from its joint.

My invention avoids the expense and labor of perforating both ears of the joint for the reception of the pivot or rivet, and also avoids the necessity for forming a separate pivot pin and heading it in place; and it also avoids defects in the pivot itself and its union with the ears, which defects are not ordinarily discovered until the joint is subjected to use. These pivots are very small, almost microscopic, are difficult to handle, and obviously are secured in place only by the exercise of considerable skill and with the utmost care. All of these disadvantages are overcome by drawing up the pivot from the material of and integrally with one of the ears. Thus by my invention not only manufacturing economies are gained, but the work of the assembler of the pin-tongue and joint is greatly facilitated, and a finished joint of great durability, strength and simplicity is provided. 7

The joint described is capable of use or adaptation for use not only with the form of pin tongue illustrated and herein described, but with pin tongues having heads of other constructions, and whether such heads are made by coiling the wire of the pin-tongue upon itself, or the head is made as a block or a solid, transversely perforated member applied to or formed with the pin-tongue.

lVhat I claim is 1. As a new article of manufacture, a pinjoint consisting of a body having opposite ears, one of the ears having drawn up from it a pivot-rivet of a length sufficient to extend to and through a hole in the other car and afford enough material to enable it to be headed up on the outside, and thereby afford a pivot for the pintongue and a rivet to unite the cars and pin-tongue, said pivotrivet projecting out of perpendicular from the car before riveting.

2. As a new article of manufacture, a pinjoint consisting of a body having opposite ears, one of the ears having drawn up from it a pivot-rivet of a length sufficient to extend to and through a hole in the other car and afford enough material to enable it to be headed up on the outside, and thereby afford a pivot for the pin-tongue and a rivet to unite the ears and pin-tongue, said pivotrivet being arcuate in the direction of its length.

In testimony whereof I have hereunto set my hand this 25th day of March A. D. 1913.

JAMES A. DORAN.

WVitnesses LILLIE M. PERRY, WM. H. FINoKnL.

Copies of thiii patent may be obtained for five cents each, by addressing the Commissioner of Eatentn, Washington, D. C. 

